This is the line that skirts the left side of the plaque without touching the plaque. Ya might get a ticket if you touch it. It starts a bit stiffer on smooth granite, then the low angle helps to make the upper part mellower. It is kinda neat to check out this ancient plaque up close.
This is just left of the big plaque.
TR. You can use a #3 & #6 hex & an old bolt off to the left.